Novel waterproof structure of orthogonal laminated wood roof

Abstract

The invention provides a novel waterproof structure of an orthogonal laminate glued wooden roof, and relates to the technical field of roof waterproofing, the novel waterproof structure comprises a plurality of laminates which are orthogonally overlapped, the adjacent laminates are spliced together in a semi-lap joint mode or a tongue-and-groove connection mode, and splicing seams are filled with glutinous rice mortar. The plurality of laminates are fixedly connected at abutted seams through a plurality of self-tapping screws, a bottom layer is arranged on the upper surface of the laminate on the uppermost layer, a surface layer is arranged on the upper surface of the bottom layer, the bottom layer is a wood paint layer or a tung oil layer or a wood wax oil layer, and the surface layer is a plurality of waterproof coating layers. The system is simple in structure, convenient to construct, high in operability, environmentally friendly, safe and practical, has high cost performance and can be widely applied to orthogonal laminated wood roofs.

Description

Technical Field

[0001] The invention relates to the technical field of roof waterproofing, in particular to a novel waterproof structure of a cross-laminated wood roof. Background Art

[0002] Cross-laminated timber is a panel-type engineered wood product made by stacking and gluing the plies orthogonally to each other. It is a commonly used material for wooden roofs. However, the existing waterproof structure of cross-laminated timber roofs is too complicated, the waterproof effect is not good, and hot work is dangerous, which is not conducive to the safety of construction. Summary of the invention

[0003] In view of the above-mentioned prior art, the present invention proposes a novel waterproof structure of a cross-laminated timber roof.

[0004] The present invention provides a novel waterproof structure of an orthogonal laminated wood roof, comprising a plurality of orthogonally stacked laminates, wherein adjacent laminates are spliced ​​together in a semi-lap joint manner or a tongue-and-groove joint manner, the joints are filled with glutinous rice mortar, and the plurality of laminates are fixedly connected at the joints by a plurality of self-tapping screws, a bottom layer is arranged on the upper surface of the uppermost laminate, a surface layer is arranged on the upper surface of the bottom layer, the bottom layer is a wood paint layer, a tung oil layer, or a wood wax oil layer, and the surface layer is a plurality of waterproof coating layers.

[0005] Preferably, the veneer is made of softwood sawn timber veneer, peeled wood veneer, laminated veneer lumber, or structural composite wood veneer.

[0006] Preferably, the number of the layer boards is an odd number.

[0007] Preferably, the moisture content of the layer boards is 10-15%, and the difference in moisture content between adjacent layer boards is less than 5%.

[0008] Preferably, the waterproof coating layer is made of rubber asphalt waterproof coating or epoxy resin waterproof coating or cement-based waterproof coating or polyurethane waterproof coating or ultra-high performance cement-based material.

[0009] Preferably, the driving position of the self-tapping screw is provided with a 2 mm thick steel washer.

[0010] Preferably, the surface layer is two layers of waterproof coating.

[0011] Compared with the prior art, the beneficial effects of the present invention are: 1. The present invention provides a new waterproof structure of a cross-laminated timber roof, in which waterproof layers are arranged on the surface of the cross-laminated timber roof panel and the panel joints, respectively, so that the cross-laminated timber roof panel structure layer can meet the waterproof requirements of level 2 or above, thereby simplifying its primary waterproof structure and avoiding the leakage problem of the cross-laminated timber roof structure caused by the damage of the primary waterproof.

[0012] 2. The present invention applies this structure to cross-laminated timber roofs through a simple design, uses two layers of hydrophobic structure and glutinous rice mortar as flexible materials to fill the board seams, and places a wood purlin cavity layer on the surface of the glued timber. The waterproof structure is simple, easy to construct, highly operable, green and environmentally friendly, safe and practical, has a high cost-effectiveness, and can be widely used in cross-laminated timber roofs. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of a new waterproof structure in an embodiment of the present invention.

[0014] Figure 2 Schematic diagram of the splicing of the layer boards in an embodiment of the present invention.

[0015] In the figure: 1. Layer board; 2. Insert board; 3. Glutinous rice mortar; 4. Self-tapping screws; 5. Wood wax oil layer; 6. Rubber asphalt waterproof coating layer. DETAILED DESCRIPTION

[0016] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below with reference to specific diagrams.

[0017] Example: Figure 1 , 2 A novel waterproof structure of an orthogonal laminated wood roof is shown, comprising three orthogonally stacked laminated boards 1, wherein the laminated boards 1 are structural composite wood laminated boards. The upper laminated board and the middle laminated board are spliced ​​together by tongue-and-groove connection, and the middle laminated board and the lower laminated board are spliced ​​together by half-lap connection, that is, the lower laminated board is divided into two blocks, and a slotted board 2 is arranged between the two blocks. The joints formed by the above splicing method are filled with sticky rice mortar 3, which provides adhesion, strength and waterproof performance between the board joints for the plywood.

[0018] Furthermore, the three layer boards 1 are fixedly connected at the joints by four self-tapping screws 4, which are nailed into the layer boards 1 to ensure effective anchoring. In order to prevent the waterproof layer from being damaged due to local force at the self-tapping screws, thereby affecting the waterproof effect, a 2mm thick steel gasket is set at the nailing position.

[0019] Furthermore, a wood wax oil layer 5 is provided on the upper surface of the topmost layer 1 for providing waterproofing during construction, and two layers of rubber asphalt waterproof coating layers 6 are provided on the upper surface of the wood wax oil layer 5, which serve as the surface waterproof layer of the cross-laminated timber roof and have the characteristics of weather resistance, ductility and long service life.

[0020] When installing the layer 1, the moisture content is controlled at 10-15%, and the difference in moisture content between adjacent layers is less than 5%. The control of moisture content during installation is of great significance to the control of internal stress of components during the use stage, the stability of component dimensions and crack prevention.

[0021] During the specific construction, the installation of the cross-laminated timber roof follows the installation principle from low to high and from the middle to both sides, and is assembled piece by piece. First, the first layer is nailed to the supporting beam or shear wall of the roof with self-tapping screws, and then the layers at the adjacent positions are hoisted into place, and sticky rice mortar is applied between the joints of the two layers. The effectiveness of the connection between the flexible waterproof material and the wood must be ensured.

[0022] Among them, the two layer boards are assembled together by half-lap joint or tongue-and-groove joint. The two layer boards are squeezed tightly. The joints should be tight and flat without obvious height differences. After verifying the position of the second layer board, it is nailed to the supporting beam or shear wall of the roof with self-tapping screws, and then the joints between the two boards are reinforced with self-tapping screws.

[0023] In order to ensure that moisture can be discharged in time after the wooden roof system is damp, an overhead cavity layer is set on the rubber asphalt waterproof coating layer 6. The overhead cavity layer is composed of bidirectional wooden purlins. Water, electricity, ventilation and other pipelines can be buried in the overhead cavity layer.

[0024] The novel waterproof structure of this embodiment can be widely used in cross-laminated timber roofs, so that the cross-laminated timber roof panel structure layer can meet the second-level waterproof requirements or above, thereby simplifying its primary waterproof structure and avoiding the leakage problem of the cross-laminated timber roof structure caused by the damage of the primary waterproof.

[0025] The above are only implementation modes of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structure made using the contents of the present invention's specification and drawings, directly or indirectly used in other related technical fields, are also within the patent protection scope of the present invention.

Claims

1. A new waterproof structure of cross-laminated timber roof, characterized in that: It comprises a plurality of orthogonally stacked layer boards, wherein adjacent layer boards are spliced ​​together by semi-lap joint or tongue-and-groove joint, the joints are filled with glutinous rice mortar, and the plurality of layer boards are fixedly connected at the joints by a plurality of self-tapping screws, a bottom layer is arranged on the upper surface of the topmost layer board, a surface layer is arranged on the upper surface of the bottom layer, the bottom layer is a wood paint layer, a tung oil layer or a wood wax oil layer, and the surface layer is a plurality of waterproof coating layers.

2. The novel waterproof structure of cross-laminated timber roof as claimed in claim 1, characterized in that: The layer board is made of softwood sawn wood layer board or rotary cut wood veneer or veneer laminated wood layer board or structural composite wood layer board.

3. The novel waterproof structure of cross-laminated timber roof as claimed in claim 1 or 2, characterized in that: The number of the layer plates is an odd number.

4. The novel waterproof structure of cross-laminated timber roof as claimed in claim 1 or 2, characterized in that: The moisture content of the layer boards is 10-15%, and the difference in moisture content between adjacent layer boards is less than 5%.

5. The novel waterproof structure of cross-laminated timber roof as claimed in claim 1 or 2, characterized in that: The waterproof coating layer adopts rubber asphalt waterproof coating or epoxy resin waterproof coating or cement-based waterproof coating or polyurethane waterproof coating or ultra-high performance cement-based material.

6. The novel waterproof structure of cross-laminated timber roof as claimed in claim 1 or 2, characterized in that: The nailing position of the self-tapping screw is provided by a 2 mm thick steel washer.

7. The novel waterproof structure of cross-laminated timber roof as claimed in claim 1 or 2, characterized in that: The surface layer is composed of two layers of waterproof coating.

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